Effect of an electron beam surface treatment on the microstructure and mechanical properties of SAF 2205 joints produced with electron beam welding

Stergiou, V; Papadimitriou, GD

dc.contributor.author	Stergiou, V	en
dc.contributor.author	Papadimitriou, GD	en
dc.date.accessioned	2014-03-01T02:08:42Z
dc.date.available	2014-03-01T02:08:42Z
dc.date.issued	2012	en
dc.identifier.issn	00222461	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29712
dc.subject.other	2205 duplex stainless steel	en
dc.subject.other	Conventional furnace	en
dc.subject.other	Furnace heats	en
dc.subject.other	Heat-treated specimens	en
dc.subject.other	Metallographic technique	en
dc.subject.other	Microstructure and mechanical properties	en
dc.subject.other	Post weld heat treatment	en
dc.subject.other	Weld joints	en
dc.subject.other	Weld surfaces	en
dc.subject.other	Electron beam welding	en
dc.subject.other	Electron beams	en
dc.subject.other	Heat treatment	en
dc.subject.other	Mechanical properties	en
dc.subject.other	Mechanical testing	en
dc.subject.other	Metallography	en
dc.subject.other	Microstructure	en
dc.subject.other	Stainless steel	en
dc.subject.other	Surface treatment	en
dc.subject.other	Welds	en
dc.subject.other	Heat treating furnaces	en
dc.title	Effect of an electron beam surface treatment on the microstructure and mechanical properties of SAF 2205 joints produced with electron beam welding	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s10853-011-6011-9	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s10853-011-6011-9	en
heal.publicationDate	2012	en
heal.abstract	The aim of present investigation is to study the effect of an electron beam surface treatment on 2205 duplex stainless steel joints produced by the same electron beam process. Heat treatment of the joints is necessary, to re-establish the ferrite/austenite balance, which is extremely disturbed during the electron beam welding process. For assessing the effectiveness of the electron beam surface treatment, similar weld joints were subjected to conventional furnace heat treatment at 1050 °C, and used as reference. Metallographic techniques and mechanical testing were used to assess the microstructure and corresponding mechanical properties of the as-welded and heat treated specimens. The metallographic results showed that an austenite/ferrite ratio approaching the one produced by a typical furnace post-weld heat treatment can also be achieved by heating locally the weld surface with an electron beam. At the same time the tensile properties show considerable improvement, approaching those obtained by means of a conventional furnace heat treatment, whereas the impact strength is also improved compared to the as welded specimen, but remains clearly lower than the one of the furnace heat treated weld. © 2011 Springer Science+Business Media, LLC.	en
heal.journalName	Journal of Materials Science	en
dc.identifier.doi	10.1007/s10853-011-6011-9	en
dc.identifier.volume	47	en
dc.identifier.issue	5	en
dc.identifier.spage	2110	en
dc.identifier.epage	2121	en